diff --git a/src/Makefile b/src/Makefile
index 355ed17..9abe92a 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,9 +1,13 @@
 CFLAGS=-Wall -Wextra -O0 -g -ggdb -pedantic
 
-all: *.o
+all: test
 
 %.o: %.c
-	gcc -O0 -Wall -Wextra -pedantic -ggdb $< -o $@
+	gcc $(CFLAGS) -c $<
+
+test: main.c database.o bitmap.o
+	gcc $(CFLAGS) -o $@ $^
 
 clean:
 	rm -f *.o
+	rm -f test
diff --git a/src/bitmap.h b/src/bitmap.h
index f7989bf..333859b 100644
--- a/src/bitmap.h
+++ b/src/bitmap.h
@@ -1,6 +1,7 @@
 #ifndef HAS_BITMAP_H
 
 #define BITMAP_SIZE 32
+#define BITMAP_BITS 256
 
 typedef unsigned char bitmap_t[BITMAP_SIZE];
 
diff --git a/src/database.c b/src/database.c
index 7d4f2f5..a18c716 100644
--- a/src/database.c
+++ b/src/database.c
@@ -16,7 +16,6 @@
 
 #include "main.h"
 #include "database.h"
-#include "bitmap.h"
 
 #define DB_SEEK(db, offset) \
   errno = 0; \
@@ -181,34 +180,3 @@ int db_wr_list(db_t *db, rec_t *list, size_t list_len)
 
   return processed;
 }
-
-int db_search(db_t *db, float tresh, match_t **matches)
-{
-  uint64_t found = 0;
-  block_t blk;
-  const int blk_size = 4096;
-  unsigned int i = 0;
-  unsigned char *p;
-  float diff = 0;
-
-  *matches = NULL;
-  match = *matches;
-  memset(blk, 0x0, sizeof(block_t));
-  blk.start = 1;
-  blk.records = blk_size;
-
-  /* TODO: expand matches */
-
-  while (db_rd_blk(db, &blk) > 0) {
-    p = blk.data;
-    for (i = 0; i < blk.records; i++, p += REC_LEN) {
-      if (*p == '\0') continue;
-      diff = bitmap_compare(p + 2, sample.data + 2) / BITMAP_BITS;
-      if (diff > tresh) continue;
-      match->diff_map = diff;
-    }
-    FREE(blk.data);
-  }
-
-  return found;
-}
diff --git a/src/database.h b/src/database.h
index 433ce77..58368c2 100644
--- a/src/database.h
+++ b/src/database.h
@@ -16,6 +16,23 @@ typedef struct {
   unsigned char *data;
 } block_t;
 
+/**
+  pos len || description
+ - 0   1  -- record is used
+ - 1   1  -- must be zero
+ - 2  32  -- bitmap, each 2 bytes is row of monochrome image 16x16
+ - 33  1  -- level of color R__
+ - 34  1  -- level of color _G_
+ - 35  1  -- level of color __B
+ - 36  11 -- must be zero
+ */
+
+#define OFF_USED   0
+#define OFF_BITMAP 2
+#define OFF_COLORR 33
+#define OFF_COLORG 34
+#define OFF_COLORB 35
+
 typedef struct {
   uint64_t num;
   unsigned char data[REC_LEN];
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..f53b045
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,87 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor Boston, MA 02110-1301,  USA
+ */
+
+#include "main.h"
+#include "database.h"
+#include "bitmap.h"
+
+int db_search(db_t *db, rec_t *sample, float tresh, match_t **matches)
+{
+  const int blk_size = 4096;
+  uint64_t found = 0;
+  block_t blk;
+  unsigned int i = 0;
+  unsigned char *p, *t;
+  float diff;
+
+  assert(db      != NULL);
+  assert(sample  != NULL);
+/*assert(matches != NULL);*/
+
+  memset(&blk,    0x0, sizeof(block_t));
+  blk.start = 1;
+  blk.records = blk_size;
+
+  if (db_rd_rec(db, sample) != 1)
+    return -1;
+  /* TODO: expand matches */
+
+  while (db_rd_blk(db, &blk) > 0) {
+    p = blk.data;
+    for (i = 0; i < blk.records; i++, p += REC_LEN) {
+      t = p + OFF_USED;
+      if (*t == 0x0) continue;
+      t = p + OFF_BITMAP;
+      diff  = (float) bitmap_compare(t, sample->data + OFF_BITMAP);
+      diff /= BITMAP_BITS;
+      if (diff > tresh) continue;
+      printf("%ld -- %f\n", blk.start + i, diff);
+      found++;
+    }
+    FREE(blk.data);
+    blk.start += blk_size;
+  }
+
+  return found;
+}
+
+int main(int argc, char **argv)
+{
+  db_t db;
+  rec_t sample;
+
+  if (argc < 3) {
+    printf("Usage: test <path> <int>\n");
+    exit(EXIT_FAILURE);
+  }
+
+  memset(&db,     0x0, sizeof(db_t));
+  memset(&sample, 0x0, sizeof(rec_t));
+  sample.num = atoll(argv[2]);
+
+  assert(sample.num > 0);
+
+  if (db_open(&db, argv[1]) == -1) {
+    printf("%s\n", db.errstr);
+    exit(EXIT_FAILURE);
+  }
+
+  db_search(&db, &sample, 0.15, NULL);
+
+  db_close(&db);
+
+  exit(EXIT_SUCCESS);
+}